Ms. pontifical, use of Rome; written and illuminated in Rome, Italy, ca. 1260-1270.
Decoration: 3 historiated, numerous illuminated initials.
Artist: Attributed to Magister Nicolaus by François Avril (an artist whose name appears in another MS of Roman patronage, BAV MS Chigi C IV 174 - Bonifacio VIII cat. no. 130).
Musical notation: 4-line red or black staves with square notation.